Akutan volcano
Updated: Jun 2, 2023 06:11 GMT -
Stratovolcano 1303 m / 4,275 ft
Aleutian Islands, USA, 54.13°N / -165.99°W
Current status: normal or dormant (1 out of 5)
Aleutian Islands, USA, 54.13°N / -165.99°W
Current status: normal or dormant (1 out of 5)
Last update: 24 Feb 2022 (small earthquake swarms)
Akutan volcano is one of the most active stratovolcanoes of the Aleutian arc. The volcano has a 2-km-wide caldera with an active intracaldera cone.
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Akutan volcano eruptions: 1992
Latest nearby earthquakes
| Time | Mag. / Depth | Distance/Location | ||
| Friday, May 26, 2023 GMT (2 quakes) | ||||
| May 25, 2023 10:24 pm (GMT -8) (May 26, 2023 06:24 GMT) | 1.8 15 km | 46 km (29 mi) 2 mi southeast of Unalaska, Aleutians West, Alaska, USA | ||
| May 25, 2023 7:29 pm (GMT -8) (May 26, 2023 03:29 GMT) | 0.5 15 km | 46 km (29 mi) 2 Km SE of Unalaska, Alaska | ||
| Thursday, May 25, 2023 GMT (1 quake) | ||||
| May 25, 2023 8:28 am (GMT -8) (May 25, 2023 16:28 GMT) | 0.2 14 km | 47 km (29 mi) 2 Km SSE of Unalaska, Alaska | ||
Background
An older, largely buried caldera was formed during the late Pleistocene or early Holocene. Two volcanic centers are located on the NW flank. Lava Peak is of Pleistocene age, and a cinder cone lower on the flank produced a lava flow in 1852 that extended the shoreline of the island and forms Lava Point. The 60-365 m deep younger caldera was formed during a major explosive eruption about 1600 years ago and contains at least three lakes. The currently active large cinder cone in the NE part of the caldera has been the source of frequent explosive eruptions with occasional lava effusion that blankets the caldera floor. A lava flow in 1978 traveled through a narrow breach in the north caldera rim almost to the coast. Fumaroles occur at the base of the caldera cinder cone, and hot springs are located NE of the caldera at the head of Hot Springs Bay valley and along the shores of Hot Springs Bay.---
Smithsonian / GVP volcano information
See also: Sentinel hub | Landsat 8 | NASA FIRMS
